shady-css-parser/dist/test/node-visitor-test.js

"use strict";
/**
 * @license
 * Copyright (c) 2016 The Polymer Project Authors. All rights reserved.
 * This code may only be used under the BSD style license found at
 * http://polymer.github.io/LICENSE.txt The complete set of authors may be found
 * at http://polymer.github.io/AUTHORS.txt The complete set of contributors may
 * be found at http://polymer.github.io/CONTRIBUTORS.txt Code distributed by
 * Google as part of the polymer project is also subject to an additional IP
 * rights grant found at http://polymer.github.io/PATENTS.txt
 */
Object.defineProperty(exports, "__esModule", { value: true });
const chai_1 = require("chai");
const node_visitor_1 = require("../shady-css/node-visitor");
class TestNodeVisitor extends node_visitor_1.NodeVisitor {
    constructor() {
        super();
        this.aCallCount = 0;
        this.bCallCount = 0;
    }
    a(a) {
        this.aCallCount++;
        if (a.callback) {
            a.callback();
        }
        return 'a';
    }
    b(b) {
        this.bCallCount++;
        if (b.child) {
            this.visit(b.child);
        }
        return 'b';
    }
}
describe('NodeVisitor', () => {
    let nodeVisitor;
    beforeEach(function () {
        nodeVisitor = new TestNodeVisitor();
    });
    it('visits nodes based on their type property', () => {
        nodeVisitor.visit({ type: 'a' });
        chai_1.expect(nodeVisitor.aCallCount).to.be.eql(1);
        chai_1.expect(nodeVisitor.bCallCount).to.be.eql(0);
        nodeVisitor.visit({ type: 'b' });
        chai_1.expect(nodeVisitor.aCallCount).to.be.eql(1);
        chai_1.expect(nodeVisitor.bCallCount).to.be.eql(1);
    });
    it('reveals the path of the recursive visitation of nodes', () => {
        const a1 = {
            type: 'a',
            callback: function () {
                chai_1.expect(nodeVisitor.path).to.be.eql([a1]);
            }
        };
        const a2 = {
            type: 'a',
            callback: function () {
                chai_1.expect(nodeVisitor.path).to.be.eql([b, a2]);
            }
        };
        const b = { type: 'b', child: a2 };
        nodeVisitor.visit(a1);
        chai_1.expect(nodeVisitor.aCallCount).to.be.eql(1);
        nodeVisitor.visit(b);
        chai_1.expect(nodeVisitor.aCallCount).to.be.eql(2);
        chai_1.expect(nodeVisitor.bCallCount).to.be.eql(1);
    });
});
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